160t Straddle Carrier for Precast Bridge Girder Handling in Indonesia

In modern bridge building, moving and assembling precast girders is the top project priority. These precast parts often weigh over 100 tons and are huge. Also, construction sites like beam yards often have limited space. This places extremely strict demands on handling equipment’s mobility, stability, and safety. Traditional rail cranes have large capacities but are limited by steel rails. They struggle to change sites and incur high infrastructure costs. To address these construction pain points, rubber-tyred straddle carriers are becoming standard for large projects. Today, we detail our actual case in a large Indonesian toll road project. We explore how a 160t straddle carrier solves beam handling problems in complex site conditions.

Project Background and On-site Challenges

This project is on Java Island, Indonesia. It is a key transport hub linking local core economic zones. The entire line includes many viaduct sections. It requires precasting and moving thousands of concrete box girders. These girders are about 30 meters long and weigh 140 to 150 tons. The client is a top local infrastructure contractor in Indonesia. During early technical talks, they clearly raised several core site pain points:

• Site Space Limits: The precast beam yard has a limited footprint. Storage area aisles are narrow. The straddle carrier needs strong steering and shuttle abilities. This allows precise positioning between dense beam rows.
• Weak Foundation Bearing Capacity: Indonesia has abundant rainfall. Some beam storage areas have soft foundations. If the straddle carrier’s ground pressure is too high, it causes ground settlement. This damages the site and triggers rollover risks.
• High-Frequency Continuous Work: Bridge erection schedules are very tight. The straddle carrier must have continuous, high-intensity work stability. The fault tolerance rate is extremely low.
• Tropical Climate Adaptability: The site has a typical tropical rainforest climate. It features high heat, high humidity, and sudden rainstorms. This heavily tests electrical waterproofing and hydraulic heat dissipation.

160t Straddle Carrier Core Technical Parameters

For the client’s actual conditions, our tech team customized a 160-ton rubber-tyred straddle carrier solution. Below are the core technical parameters of this straddle carrier. All indicators underwent strict mechanical calculations and on-site simulations:

Targeted Solutions and Equipment Advantages

The site in Indonesia has limited space, high heat, and rain. This 160t straddle carrier underwent several targeted system optimizations:

• All-Round Flexible Steering to Solve Site Dead Angles: It features a multi-mode independent hydraulic steering system. The driver switches between longitudinal straight, 90-degree crab, diagonal, and pivot steering with one button. This zero turning radius design lets 100-ton equipment move easily in narrow aisles. It greatly improves site space utilization.
• Multi-Axle Hydraulic Suspension to Reduce Ground Pressure: For soft rainy season foundations, the chassis uses multi-axle hydraulic suspension equalization technology. Sixteen heavy-duty tires are distributed across four bogie groups. Hydraulic cylinders compensate for height variations during travel. This ensures even wheel loads and prevents ground settlement and chassis twisting.
• High-Precision Synchronous Lifting and Anti-Sway: Lifting 150-ton heavy loads leaves an extremely low fault tolerance. The winch system uses closed-loop proportional valves. Lifting points on both sides achieve millimeter-level synchronous movement. A high-rigidity gantry and anti-sway algorithms minimize girder movement during travel and emergency stops. This ensures accurate and safe girder positioning.
• Customized Protection for Tropical Climates: In tropical rainforest climates, control cabinets use IP55 double-layer seals with industrial dehumidifying heaters. The hydraulic system uses high-power radiators. Steel structures are coated with marine-grade anti-corrosion paint. This ensures continuous operation above 35°C in high humidity and salt spray.

Customer Feedback and Project Benefits

After arriving in Indonesia and completing debugging, the straddle carrier entered intense construction quickly. Over the past year, this 160t straddle carrier maintained an extremely high attendance rate.

According to feedback from the client’s equipment manager:

“Previously, using gantry cranes meant laying and adjusting tracks took much labor and time. After introducing your rubber-tyred straddle carrier, our beam storage and lifting efficiency increased by at least 40%. It operates smoothly and is very durable. It survived the rainy season, while electrical and travel systems ran stably. Its excellent pivot steering saved us a large civil engineering budget for site expansion.”

Based on actual application data, this straddle carrier transfers 10 to 12 heavy box girders daily. Its downtime rate is far below the industry average. Efficient handling operations provide a steady supply of “ammunition” for the bridge erection machine ahead. This strongly guarantees the schedule of the entire Indonesian highway project.

Anni Zhang

Crane & Heavy Equipment Export Specialist

With 10+ years of experience in the Crane Overseas Export Industry, helped 10,000+ customers with their pre-sales questions and concerns. If you have any related needs, please feel free to contact me!

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